Trains Two trains, Train A and Train B, weigh a total of 451 tons. Train A is heavier than Train B. The difference of their weights is 355 tons. What is the weight of each train?
Train A weighs
tons.

Train A = 403

Train B = 48

Step-by-step explanation:

A + B = 451

A - B = 355

Solve by adding the equations together.

2A = 806

806 / 2 = A

A = 403

Plug in 403 for A

403 + B = 451

451 - 403 = B

B = 48

answer: the price of one pound cabbage = $ 0.8

the point (10,8) represents that the cost of 10 pounds cabbage is $ 8

step-by-step explanation:

since, here is a proportional relation between the number of pounds of cabbage (x) and the price in dollars (y).

therefore, we can write,

⇒ y = k x

where k is the constant of proportionality.

now, point (5,4) is in the line.

thus, it will satisfies the above equation of line.

⇒ 4 = 5 k

⇒ k = 0.8

thus, the equation of the line is,

y = 0.8 x

a) for x = 1,

y = 0.8

therefore, the cost of one pound of cabbage is 0.8 dollars.

b) in the below graph (10,8) represents that the cost of 10 pounds of cabbage is 8 dollars.